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 Title: |
US5668867:
Foldable portable telephone with improved antenna gain
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Nagai, Michio; Tokyo, Japan
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| Assignee: |
NEC Corporation, Tokyo, Japan
other patents from NEC CORPORATION (395735) (approx. 22,197)
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| Published / Filed: |
1997-09-16
/ 1996-09-30
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| Application Number: |
US1996000723508
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| IPC Code: |
Advanced:
H01Q 1/24;
H04B 1/38;
H04M 1/02;
H04M 1/03;
H04Q 7/32;
IPC-7:
H04B 1/38;
H04M 1/00;
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| ECLA Code: |
H04B1/38P2; H01Q1/24A1; H01Q1/24A1A1; H01Q1/24A1C; H04M1/02A2B4; H04M1/02A2B8; H04M1/03; H04M1/08; T04M1/02A2B4; T04M1/02A2B8;
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| U.S. Class: |
Current:
379/433.13;
379/433.02;
379/433.06;
379/434;
455/575.3;
Original:
379/433;
379/428;
379/434;
455/090;
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| Field of Search: |
379/433,434,428,424,425
455/089,90
361/814
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| Priority Number: |
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| Abstract: |
A foldable portable telephone is made up of an upper casing having a receiver portion, and a lower casing having a transmitter portion. The lower casing is rotatably connected to the upper casing by a hinge. When the lower casing is rotated away from the upper casing, the receiver portion is moved to protrude from the upper casing. At this instant, the telephone is brought into an off-hook state. When the lower casing is rotated onto the upper casing, the receiver portion is retracted into the upper casing while the telephone is brought into an on-hook state. The receiver portion, when protruded from the upper casing, increases the distance between an antenna and the user's ear. In this condition, the antenna is not influenced by the user's body and, therefore, maintains a sufficient antenna gain.
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| Attorney, Agent or Firm: |
Young & Thompson ;
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| Primary / Asst. Examiners: |
Chiang, Jack K.;
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| INPADOC Legal Status: |
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